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The tCL & tRCD behaves similar to Hynix CFR / MFR, however they scale very well with the voltage.
tRP is pretty much immune, with low voltages it is tRCD - 2 MEMCLKs however with higher voltages -3 MEMCLKs should be possible.
With some proper sorting and PCB the Q-die might become the fastest DDR3 IC yet.

Yes, please.
4Gbit B-die also runs tighter than MFR (on average) but it can't do much above 1250MHz. If Q-die doesn't have this problem, then it might indeed be the new top 4Gbit IC.

Haswell appears to be the most ed up platform I have ever seen.
Can't make the modules even post at 2133MHz, no matter what settings I try.
I've tried "Auto" settings, manual settings (including the voltages), different straps etc.

At 100MHz BCLK and strap none of my modules even post at 1866MHz.
With 125MHz strap I got a Hynix CFR to post at DDR-2500, but thats all.

All of the MFR and Samsung modules (B / Q) will just get the board to a reset-shutdown-reset loop.
The motherboard is ty too (Z87M-PLUS) but ASUS has validated it at DDR-2800 according to the documents.

My experience on Haswell is around 10 minutes long, but it just can't be that hard can it?

Haswell appears to be the most ed up platform I have ever seen.
Can't make the modules even post at 2133MHz, no matter what settings I try.
I've tried "Auto" settings, manual settings (including the voltages), different straps etc.

At 100MHz BCLK and strap none of my modules even post at 1866MHz.
With 125MHz strap I got a Hynix CFR to post at DDR-2500, but thats all.

All of the MFR and Samsung modules (B / Q) will just get the board to a reset-shutdown-reset loop.
The motherboard is ty too (Z87M-PLUS) but ASUS has validated it at DDR-2800 according to the documents.

My experience on Haswell is around 10 minutes long, but it just can't be that hard can it?

If you want to overclock any RAM in 10 minutes you should try Z87 OC Formula. When I first time tried to overclock memory on Z86 I just selected desired memory profile and it was enough for good result.

Tried older bios versions on the Z87M-PLUS, they made no difference.
I also tried adding a XMP profile taken from a compatible 2666MHz CL12 MFR dual rank kit.
It appears the bios is not even able to interprete the XMP profiles properly. It doesn't set the secondary timings at all eventhou they are specified in the XMP profile. Tried to set the main and secondary timings manually based on a MFR timing set, it made no difference either.

On a 5800K Trinity APU I was able to make them run at 1308MHz 12-13-13 with 1.52V.
Didn't try any tighter timings or higher voltages as the IMC isn't very stable even at that frequency.

I'm not going to waste any more time on Haswell or AMD.
Afterall I am gone anyway pretty soon.

Tried older bios versions on the Z87M-PLUS, they made no difference.
I also tried adding a XMP profile taken from a compatible 2666MHz CL12 MFR dual rank kit.
It appears the bios is not even able to interprete the XMP profiles properly. It doesn't set the secondary timings at all eventhou they are specified in the XMP profile. Tried to set the main and secondary timings manually based on a MFR timing set, it made no difference either.

On a 5800K Trinity APU I was able to make them run at 1308MHz 12-13-13 with 1.52V.
Didn't try any tighter timings or higher voltages as the IMC isn't very stable even at that frequency.

I'm not going to waste any more time on Haswell or AMD.
Afterall I am gone anyway pretty soon.

say it isn't so! without you, who will point out the jackassery of oems? not many have the skillset that you possess to point these issues out.

Tried older bios versions on the Z87M-PLUS, they made no difference.
I also tried adding a XMP profile taken from a compatible 2666MHz CL12 MFR dual rank kit.
It appears the bios is not even able to interprete the XMP profiles properly. It doesn't set the secondary timings at all eventhou they are specified in the XMP profile. Tried to set the main and secondary timings manually based on a MFR timing set, it made no difference either.

On a 5800K Trinity APU I was able to make them run at 1308MHz 12-13-13 with 1.52V.
Didn't try any tighter timings or higher voltages as the IMC isn't very stable even at that frequency.

I'm not going to waste any more time on Haswell or AMD.
Afterall I am gone anyway pretty soon.

Set TRDWR + TRDWR_dr+dd set from tertiary manually to relaxed values like 15-16 whatever,then u will be able to boot,then u tighthen them up.It's a ty issue and it was reported llong time ago by me....

Tried older bios versions on the Z87M-PLUS, they made no difference.
I also tried adding a XMP profile taken from a compatible 2666MHz CL12 MFR dual rank kit.
It appears the bios is not even able to interprete the XMP profiles properly. It doesn't set the secondary timings at all eventhou they are specified in the XMP profile. Tried to set the main and secondary timings manually based on a MFR timing set, it made no difference either.

On a 5800K Trinity APU I was able to make them run at 1308MHz 12-13-13 with 1.52V.
Didn't try any tighter timings or higher voltages as the IMC isn't very stable even at that frequency.

I'm not going to waste any more time on Haswell or AMD.
Afterall I am gone anyway pretty soon.

Set TRDWR + TRDWR_dr+dd set from tertiary manually to relaxed values like 15-16 whatever,then u will be able to boot,then u tighthen them up.It's a ty issue and it was reported llong time ago by me....

Made no difference.
I've already tried to loosen up all of the timings, it changes nothing.

The way it shuts down, it is almost like the board is hitting some sort of hardware protection (OVP/OCP).

The CPU should be fine as it is a brand new part, never molested.
Surely no IMC can be this bad, can it?